Right click file com.day.cq.wcm.cq-wcm-geometrixx.bnd under /apps/geometrixx/src/impl/src/main/java and select Build->Build Bundle. This should build and restart geometrixx bundle in CQ instance your CRXDE is connected to.

Note, if you don't see com.day.cq.wcm.cq-wcm-geometrixx.bnd then right click on pom.xml and select Build->Generate .bnd file.

To verify that your new event lister has been deployed go to the components tab in the Felix Console and make sure com.day.cq.wcm.apps.geometrixx.impl.ReplicationEventListener is there.

To test your replication listener activate a page in CQ and examine crx-quickstart/logs/error.log file under your CQ installation. By default all logging from code deployed in CQ should go there. You should see messages similar to